Question

If the height of a cone is doubled then it's volume is increased by
(a) 100%
(b) 200 %
(c) 300 %.
(d) 400 %





(a) % correct answers​

Answer 1

Answer:

Let the radius of the cone is r and volume is h then

Volume of the cone=

3

1

πr

2

h

if the height of the cone is double the

New volume=

3

1

πr

2

(2h)=

3

2

πr

2

h

increment of the volume=

3

2

πr

2

h−

3

1

πr

2

h=

3

1

πr

2

h

% increase=

3

1

πr

2

h

3

1

πr

2

h

×100=100%

.

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Answer 2

Answer:

c will be the answer mark me brainliest